I’ve been dozing and shooting 308 Winchester in my AR10 for a couple of years now with minimal trouble in terms of chambering. My son bought a 308 Ruger American II so I thought I’d test a few in his rifle. The dozing die is bottomed out on the shell holder so I can’t really go any lower that way. When I try to chamber the reloaded rounds I have difficulty locking the bolt closed. Any idea what causes this? I’m loading 168 grain Amax, 168 grain Speer, and 150 grain Hornady FMJ, all to 2.795” - 2.800” COAL. Cases are trimmed when they exceed the max of 2.015”. Generally they run between 2.007” and 2.010”. My case trimmer takes them down to 2.006” - 2.007”.